AT73C237 Atmel, AT73C237 Datasheet - Page 3

• Manufacturer Part Number: AT73C237
• Description: IC POWER MANAGEMENT UNIT 16QFN
• Manufacturer: Atmel

Specifications of AT73C237

• Applications: Wireless
• Current - Supply: 250µA
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Pin Description
6362A–PMAAC–01-Jul-08
Table 3-1.
Note:
Pin Name
XRESIN
VO3
VDD3
XRESO
VO4
GNDD
VDD4
VZAP
VDD2
VO2
TWCK
TWD
VDD1
VO1
GNDA/AVSS
VBG
(3)
(1)
(4)
(2)
1. Connect to ground (via an internal pull-down)
2. Connected to VDD1, 2 or 3 on AT73C237.
3. Connected to VDD1, 2 or 3 on AT73C237.
4. VDD1, 2, 3 should have the same input voltage.
Pin Description
GND/Input
Output
Output
Output
Output
Output
Output
Input
Input
GND
Input
Input
Input
Input
Input
Input
I/O
Pin Number
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Analog
Analog
Analog
Analog
Analog
Analog
Digital
Power
Digital
Power
Power
Digital
Power
Digital
Digital
Power
Type
Function
Reset in pin
LDO3 output voltage
LDO3 input voltage
Reset out pin
LDO4 output voltage
Digital ground
LDO4 input voltage
Reserved for manufacturing purposes.
LDO2 input voltage
LDO2 output voltage
TWI input clock or LDO1,2,3 enable at
logic “1“, disable at “0“
TWI input/output or tied to Vdd
LDO1 input voltage
LDO1 output voltage
Analog ground and ESD ground
Voltage reference for analog cells
AT73C237
3